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Due to the contention for the shared disk bandwidth, the user I/O intensity can significantly impact the performance of the online low-priority background tasks, thus reducing the reliability and availability of RAID-structured storage systems. In this paper, we propose a novel and practical scheme, called WorkOut (I/O Workload Outsourcing), to significantly boost the performance of those low-priority...
Prefetching is an effective technique for improving file access performance, which can significantly reduce access latency for I/O systems. In distributed storage systems, prefetching for metadata files is critical for the overall system performance. In this paper, an affinity-based metadata prefetching (AMP) scheme is proposed for metadata servers in large-scale distributed storage systems to provide...
Providing efficient and robust storage service in large sensor networks is critical and challenging. In this paper, an active region-based storage (ARS) mechanism is proposed to accommodate the dynamic data-access behaviors and mutable external environments, where solar intensity which energy producing depends on changes dynamically. The ARS divides the whole network into geographical regional sub-networks,...
As the object-based storage device (OSD) protocol emerges as the next generation storage technology, its security has received a great deal of attentions. Object-based storage security mechanism is credential-based. It doesn't consider intrusion threat. Since OSD can observe all the changes to the object data and attributes, it can spot several types of intrusion. In this paper, we study how intrusion...
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